Causes, Symptoms, and Repairs of OBDII Diagnostic P0102 Fault

Fault code P0102, applicable to all vehicle manufacturers, indicates “Mass or Volume Air Flow Circuit Low Input”. This generic powertrain code signifies that the Powertrain Control Module (PCM) or Engine Control Module (ECM) has detected that the incoming signal voltage from the Mass Air Flow (MAF) sensor is consistently below the minimum expected threshold for the current engine operating conditions .